There are 7 students at the math club picnic. if 4 students are drinking punch and 3 are drinking lemonade , what fraction are drinking lemonade?

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Arational number that is equivalent to -20/4?